Drawer

ABSTRACT

The present invention refers to a drawer whose lateral walls ( 13, 15 ) and subsequent ( 14 ) are formed starting from an only laminated piece ( 10 ) that comprises at least two weak areas ( 11, 12 ) that define sovereign of bending for the formation of the said lateral walls ( 13, 15 ) and subsequent ( 14 ). In accordance with to present invention, the need is eliminated of setting up the subsequent wall to the lateral walls, in that way being saved time of assembly and eliminating the employment of fixation means, such as screws, nuts, pins, pegs etc.

FIELD OF THE INVENTION

The present invention refers, in a general manner, of a drawer to beinserted in rails for drawers-case. More specifically, the presentinvention refers to a drawer for fitting in drawers-case rails, whoselateral walls and the subsequent wall is formed from an only piece, inthat way facilitating your assembly.

BACKGROUND OF THE INVENTION

Are known in the state of art, drawers that possess metallic lateralwalls that, usually, it's conformed to be inserted directly indrawers-case rails. Those drawers differs of the other common drawersbecause it is not directly necessary the employment of rails in drawers,but only in the drawers-case.

This type of drawer of the state of art possesses it's lateral wallsseparated one of the other, generally conformed in metallic material,such as the carbon steel carbon, for be inserted directly in the railsof the drawers-case. In that way, the other walls of the drawer, such asthe subsequent wall, the previous wall and the bottom are separate fromthe lateral walls and, usually, it's manufactured of another material,like as wood, compensated woods etc.

Those drawers represent a profit in relation to the common drawers,because being the lateral walls conformed to be inserted directly to themounted rails in the drawers-case, a pair of rails is eliminated thatwould be mounted in the lateral walls of the drawer. This represents asignificant profit of time for the assembly of the drawers, as well asalso an economical profit, because it is not necessary the use of anequal one the more of rails.

However, it is necessary to set up and to fasten the walls of the drawerthat are separate some of the other ones. That assembly operation andfixation of the lateral walls to the walls frontal, subsequent and tothe bottom it is quite onerous, because it is necessary the employmentof devices to centralize the lateral walls of the drawer in relation tothe other walls that will fixed to the said lateral walls. Moreover, itis also indispensable the employment of fixation means, such as screws,pins, pegs, nuts, glues etc and the fixation of those means in the wallsof the drawer.

Therefore, it's desirous to reduce this time of operation of assembly ofthe drawer when it's used lateral walls that are inserted directly inrails for drawers-case.

This way, constitutes a first objective of the present invention toprovide a drawer who's the lateral walls and the subsequent wall areformed jointly from an only piece, being eliminated the assembly need ofat least a wall of a drawer.

Constitutes another objective of the present invention to provide adrawer whose bottom is set up through fitting, being eliminated the needof the employment of fixation means and centralization, facilitating anddecreasing, consequently, the time of assembly of a drawer.

SUMMARIZED DESCRIPTION OF THE INVENTION

The objectives above mentioned, among others, are reached with topresent invention, that constitutes a drawer whose lateral andsubsequent walls are formed starting from an only laminated piece,particularly a laminated piece starting from a metallic foil, thatunderstands at least two areas weakened that define enlarging areas forthe formation of the said lateral walls and subsequent of the saiddrawer.

The weak areas for enlarging are spaced to each other and it's definesthe width of the subsequent wall of the drawer, only that theductibility of those weak areas be larger than the medium ductibility ofthe walls of the drawer. In other words, the tension of drainage of thesaid weak areas should be smaller than the medium drainage tension ofthe walls of the drawer, so that they can bend easily in that more areathat in other areas of the walls of the drawer. However, the sheartension should be such that there is not the shear of the weak areaswhen bent. The weak areas should support the enlarging operation withoutshearing. Some materials can be used for the production of the drawer ofthe present invention with appropriate thickness for not happening theshear of the weak areas as, for instance, the carbon steel ASTM 1020with thickness of 1 mm. Other metallic alloys can be used, as well asalso polymeric materials, since the areas weak non-shear when bent.

Those weak areas can be formed by any mean known of the man of the art.For instance, it can diminish the amount of material that composes theplan of the wall conforming a series of openings spaced to each other,as wrinkled area. Optionaly, the weak areas can be formed by thedecrease of the thickness of the by electro-erosion. The weak areas canstill be formed, optionaly, for corrosive chemical attack orelectro-erosion, or any other appropriate method.

The drawer of the present invention can comprise, still, a canaleta inform of “U” in the portion more inferior of the said lateral walls andsubsequent, so that it is in it inserted the bottom of the drawer.

In an accomplishment of the present invention, the walls of the drawercan understand in your superior portion a rail profile for fitting in arail corresponding of a drawers-case, as well as openings foreseen toreceive sheaves, necessary to the sliding of the drawer on the saidrail.

In agreement with an accomplishment, the lateral walls and subsequent ofthe drawer of the present invention they can be grooved, to increase theresistance to the torsion of the said lateral walls and subsequent.

The drawer according to the present invention can understand openingsstill foreseen for the employment of fixation means of a front wall, aswell as openings for the employment of fixation means for the bottom ofthe drawer, in case necessary.

BRIEF DESCRIPTION OF THE FIGURES

The improvements and effects of the present invention will be apparentto the technicians in the subject from the detailed descriptionpresented to proceed, being made reference to the enclosed figures, justgiven to illustrative title of accomplishments peculiar of theinvention. The figures are schematics and your dimensions andproportions cannot correspond to the reality, once they just seek toillustrate to present invention in a didactic way, without imposing anylimitations or else those contained in the claims presented further on,wherein:

The FIG. 1 is a view in perspective of the only piece from which thedrawer of the present invention is formed;

The FIG. 2 is a view in perspective of the drawer of the presentinvention with the bent lateral walls; and

The FIG. 3 is a view in perspective of the drawer of the presentinvention fit in two rails of a drawers-case.

DETAILED DESCRIPTION OF THE INVENTION

With relationship, firstly, to the FIG. 1, the only piece (10) isillustrated from which the drawer of the present invention will beformed. According with this accomplishment, the only piece is,preferably, laminated from a metallic foil of carbon steel in alaminating of step.

In the pass laminating, the profile of the only piece (10) is conformedand are formed for stamping,the weak areas (11, 12) that comprisesopenings spaced to each other, so that in the said weakened areas thedrainage tension will be smaller than the medium drainage tension of thewalls (13, 14, 15) of the drawer. Those weak areas (11, 12) they arespaced to each other (X) so that they define the width of the subsequentwall (14) of the drawer.

The profile of the only piece can comprise in its inferior portion agroove (16) in form of “U” for fitting of the bottom of the drawer.Alternatively, the profile of the only piece comprises in your superiorportion a rail profile (17) for fitting in a rail corresponding of adrawers-case, as well as openings (18) for fitting the sheaves,necessary for the sliding of the drawer in the rails of thedrawers-case. The profile of the walls (13, 14, 15) can be channeled, inway to increase the resistance to the torsion of the drawer.

Now, in relation to the FIG. 2, the drawer (20) is illustrated of thepresent invention. As it can be observed, the lateral walls (13, 15) arebent one in direction to the other in 90° in relation to the subsequentwall (14). The fold runs in the weak areas (11, 12), forming the lateralwalls (13, 15) and the subsequent wall (14).

As the ductibilidade of the weak areas (11, 12) is larger than themedium ductibilidade of the walls of the drawer (13, 14, 15), or be, thetension of drainage of the weak areas (11, 12) is smaller than themedium drainage tension of the walls (13, 14, 15), said weak areas (11,12) bend more easily than any other area contained in the walls (13, 14,15) of the drawer (20), when applied a tension in at least one of thelateral walls (13, 15).

The operation of doubling of the walls (13, 15) can be accomplishedmanually, for a common person, being just enough that takes place asubstantial fixation of the subsequent wall (14) so that it is viablethe doubling of the weak areas (11, 12).

Still in accordance with the cultured accomplishment in the FIG. 2, theportion more inferior of the walls (13, 14, 15) are conformed with aprofile of a groove in “U”, in the which the bottom of the drawer can befit (not illustrated). In the groove in “U” can be foreseen holes (19)for the greeting of fixation means, such as screws or pins, to fastenthe bottom of the drawer (not illustrated) in the lateral walls (13, 15)and subsequent (14).

Still optionaly, and in accordance with the cultured accomplishment inthe FIGS. 2 and 3, the portion more superior of the walls (13, 14, 15)still comprises a profile in rail form (17) to fit in a railcorresponding of a sliding one (21), for your time fastened in adrawers-case (not illustrated). According to this accomplishment, theneed of the employment of a pair of rails is eliminated in the drawer(20). The profile of the rail (17) can also comprise areas (18) foreseenfor the sheaves fitting (22), like as illustrated in the FIG. 3, for thesliding in the rail (21) of the sliding.

The lateral walls (13, 15) can also understand areas (23) foreseen toreceive means of fixation of a front wall (not illustrated) for thedrawer.

Therefore, as it could be verified by the description detailed above,the drawer of the present invention comes to facilitate the productionand assembly of drawers because starting from an only piece it allowsthat is formed, with a simple bending operation, the lateral walls (18,19) and subsequent (20) of a drawer, being eliminated, like this, theneed of use of centralizing equipments, of fixation means, such asscrews, nuts, pegs or glues, and allowing a faster assembly incomparison with the drawers of the state of art.

It should be recognized that, although to present invention it has beendescribed with relationship to your favorite accomplishment, thetechnicians in the subject can develop a wide variation of structuraland operational details, as well as they will above be able to expandthe drawer described for other types of destinations without, however,to stray of the beginnings of the present invention. Therefore, theenclosed claims should be interpreted as covering all equivalent onesthat are framed inside of the ambit and character of the invention.

1. A drawer comprising lateral walls and a subsequent wall which areformed from an only piece that is laminated and that comprises at leasttwo weak areas that define bending areas for the formation of saidlateral walls and subsequent wall.
 2. The drawer, in accordance withclaim 1, wherein said weak areas are spaced to each other and define thewidth of said subsequent wall of the drawer.
 3. The drawer, inaccordance with claim 1, wherein said weak areas are formed whenconforming to openings spaced to each other, forming a wrinkled area. 4.The drawer, in accordance with claim 1, wherein the weak areas areformed by chemical attack with material oxidizer or for electro-erosion.5. The drawer, in accordance with claim 1, wherein a portion moreinferior of said walls comprises a groove in form of “U” in the whichthe bottom of said drawer is fit.
 6. The drawer, in accordance withclaim 1, wherein a superior portion of the walls is conformed with arail profile and openings foreseen to receive a sheave, for fitting in acorresponding rail of a drawers-case.
 7. The drawer, in accordance withclaim 1, wherein said walls are conformed to a grooved profile.
 8. Thedrawer, in accordance with claim 1, wherein said lateral walls compriseadditional openings foreseen to receive means of fixation of a frontwall and openings foreseen to receive means of fixation of the bottom ofsaid drawer.
 9. The drawer, in accordance with claim 1, wherein thedrawer is manufactured from a carbon steel plate.